(3GdYdGbGJ GdYGeI (B/s - (3MSf GMeO Jhajbs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1972)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdGOGQI GdYGeIs; (3GdYdGbGJ GdYGeIs